A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6105-01-173-3993
NSN 6610-01-003-9058
NSN 5945-00-248-6798
NSN 6220-01-411-0375
NSN 6105-01-401-5361
NSN 6130-00-557-1583
NSN 6320-00-360-1744
NSN 6130-00-202-4688
NSN 6150-01-441-2254
NSN 6610-01-499-7366
NSN 4140-01-236-7646
NSN 5990-01-033-1423